Home / 316,389.20-474,308.28-129,281.36

Finding the Fourth Proportional to 316,389.20, 474,308.28 and 129,281.36

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Solution

The fourth proportional to 316,389.20, 474,308.28 and 129,281.36 is: 193,809.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,389.20 : 474,308.28 = 129,281.36 : x
  2. Step 2: Convert to fraction form
    316,389.20/474,308.28 = 129,281.36/x
  3. Step 3: Cross multiply
    316,389.20x = 474,308.28 × 129,281.36
  4. Step 4: Simplify right side
    316,389.20x = 61,319,219,497.66
  5. Step 5: Solve for x
    x = 61,319,219,497.66/316,389.20
  6. Step 6: Final answer
    x = 193,809.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.